Marine hydrodynamic power generation device

Abstract

According to the marine hydrodynamic generator, when a ship body is anchored through a moving mechanism, a hydrodynamic power generation device is put down so that the hydrodynamic power generation device can generate power at the water bottom through hydrodynamic force, meanwhile, the moving mechanism adjusts the steering direction of the hydrodynamic power generation device so that the maximum water flow can be captured, and the hydrodynamic power generation device can generate power. In addition, the flow guide cover shell is arranged in the hydrodynamic power generation device, the water flow environment can be changed, the water flow efficiency can be improved, the hydrodynamic power utilization rate is improved accordingly, when the ship body sails, the moving mechanism recycles the hydrodynamic power generation device, the ship sailing resistance is reduced, and normal sailing of the ship is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydroelectric power generation, in particular to a marine water power generation device. BACKGROUND

[0002] At present, the power of ships is usually provided by liquefied natural gas, batteries, hydrogen, solar energy and wind energy, but the liquefied natural gas will produce carbon emissions and affect the environment, the batteries need to be powered from the power grid, which is inconvenient to use, and the hydrogen, solar energy and wind energy have the defects of small energy density, difficult storage and easy to be affected by weather environment, which makes it difficult to provide stable and continuous energy for ships.

[0003] Further, the energy density of water power is much larger than that of wind power, and it is matched with the application scene of ships, which can effectively improve the energy capture efficiency and provide stable energy for ships.

[0004] As shown in Figure 1 The existing water power generation device 1' is fixedly arranged on the water bottom, which is not easy to install and use on the ship, and also increases the sailing resistance of the ship, and the blade 2' of the existing water power generation device captures water flow, and the overall water power utilization rate and power generation efficiency are low.

[0005] Therefore, how to effectively improve the water power utilization rate and power generation efficiency, provide stable and continuous energy for ships, and not affect the sailing of ships has become a problem to be solved in the field. SUMMARY

[0006] In view of the defects of the prior art, the purpose of the present application is to provide a marine water power generation device with high water power utilization rate and power generation efficiency, which does not affect the sailing of ships.

[0007] In order to achieve the above purpose, the marine water power generation device provided by the present application cooperates with the ship body and comprises a water power generation device, a ship body mounting bracket and a moving mechanism, the water power generation device is connected with the moving mechanism through the ship body mounting bracket, the water power generation device comprises a fairing and a power generation assembly arranged on the inner side of the fairing, the moving mechanism can lower the water power generation device when the ship body is anchored, adjust the steering of the water power generation device, and also can recover the water power generation device when the ship body is sailing.

[0008] Further, the moving mechanism comprises a hydraulic lifting device, a guide rod, a steering motor, a rotating cylinder and a ship body mounting base, the guide rod is arranged on the ship body mounting base, one end of the rotating cylinder is connected with the steering motor, the other end penetrates through the ship body mounting base and is connected with the ship body mounting bracket, and the hydraulic lifting device can drive the rotating cylinder to move along the guide rod.

[0009] Further, the moving mechanism further comprises a power conversion device, the ship body mounting support is internally provided with a power generator electrical connection box matched with the water power generator, the rotating cylinder is internally formed with a cable passing cavity communicated with the power generator electrical connection box, and a conductive slip ring connected with the power conversion device is further arranged at the top end.

[0010] Further, the ship body mounting support is configured in a wedge-shaped structure, and the two sides are formed with streamlined side edges and are smoothly connected with the water power generator.

[0011] Further, the flow guide cover is configured in a horn mouth structure, and the inlet area is larger than the outlet area.

[0012] Further, the power generation assembly comprises a paddle, a rotor and a stator, the stator is configured in a ring-shaped structure and is arranged in the flow guide cover, the rotor is configured in a ring-shaped structure and is distributed on the inner side of the stator, and the paddle is arranged on the inner side of the rotor and can drive the rotor to rotate synchronously.

[0013] Further, the flow guide cover is configured in a horn mouth structure, and the inlet area is larger than the outlet area.

[0014] Further, the paddle is arranged on the inner side of the rotor at an angle.

[0015] Further, the paddle is configured in a tapered distribution which is reduced in width from the inner side of the rotor to the center of the flow guide cover.

[0016] The marine water power generator provided by the application can lower the water power generator when the ship body is anchored, so that the water power generator generates power by using water power under water, and the moving mechanism adjusts the direction of the water power generator to capture the maximum water flow, thereby improving the water power utilization rate and the power generation efficiency. The water power generator is provided with a flow guide cover, which can change the water flow environment and improve the water flow efficiency, thereby improving the water power utilization rate. When the ship body sails, the moving mechanism recovers the water power generator, reduces the sailing resistance of the ship, and does not affect the normal sailing of the ship. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described in combination with the drawings and specific embodiments.

[0018] Figure 1 It is a structural schematic view of the existing water power generator;

[0019] Figure 2 It is a schematic view of the recovery state of the marine water power generator provided by the application;

[0020] Figure 3 It is a schematic view of the lowering state of the marine water power generator provided by the application;

[0021] Figure 4 Figure 1 is a schematic diagram of the cooperation structure between the water power generation device and the ship body in the present application;

[0022] Figure 5 Figure 2 is a schematic diagram of the structure of the ship body mounting bracket in the present application;

[0023] Figure 6 Figure 3 is a top view schematic diagram of the ship body mounting bracket in the present application;

[0024] Figure 7 Figure 4 is a front view schematic diagram of the water power generation device in the present application;

[0025] Figure 8 Figure 5 is a side view schematic diagram of the water power generation device in the present application;

[0026] Figure 9 Figure 6 is a partial enlarged view of Figure 8 Figure 7 is a partial enlarged view of

[0027] Figure 10 Figure 8 is a top view schematic diagram of the water power generation device in the present application.

[0028] Reference signs:

[0029] 1. water power generation device; 11. fairing; 111. inlet; 112. outlet; 113. accommodation groove; 12. paddle; 121. root; 122. tip; 13. rotor; 14. stator; 15. bearing;

[0030] 2. ship body mounting bracket; 21. power generator electricity connection box;

[0031] 3. moving mechanism; 31. hydraulic lifting device; 32. guide rod; 33. steering motor; 34. slewing cylinder; 35. ship body mounting base; 36. accommodation plate; 37. sliding support rod; 38. grid; 39. power conversion device; 391. conductive slip ring;

[0032] 4. ship body; 41. base line. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific drawings.

[0034] Referring to Figures 2 to 4 , which shows one example of the water power generation device for ship provided by the present application.

[0035] As shown in the figure, the water power generation device for ship in the present example cooperates with the ship body 4, and mainly comprises a water power generation device 1, a ship body mounting bracket 2 and a moving mechanism 3.

[0036] The water power generation device 1 is connected with the moving mechanism 3 through the ship body mounting support 2, the water power generation device 1 comprises a fairing 11 and a power generation assembly arranged inside the fairing 11, the moving mechanism 3 can lower the water power generation device 1 when the ship body 4 is anchored, and adjust the steering of the water power generation device 1 to capture the maximum water flow, so as to improve the water power utilization rate and the power generation efficiency, and can also recover the water power generation device 1 when the ship body is sailing, reduce the sailing resistance, and not affect the normal sailing of the ship body 4.

[0037] In combination Figures 2 to 4 The moving mechanism 3 is arranged in the ship body 4, mainly comprising a hydraulic lifting device 31, a guide rod 32, a steering motor 33, a rotating cylinder 34 and a ship body mounting base 35, the ship body mounting base 35 is arranged at the bottom end of the ship body 4, the hydraulic lifting device 31, the guide rod 32, the steering motor 33 and the rotating cylinder 34 are distributed above the ship body mounting base 35 and are arranged inside the ship body 4, and the water power generation device 1 is distributed below the ship body mounting base 35, so that the ship body mounting base 35 can isolate the inside of the ship body 4 and the water power generation device 1, and facilitate the lowering and power generation work of the water power generation device 1.

[0038] Specifically, the hydraulic lifting device 31 and the steering motor 33 are arranged on the installation plate 36 respectively, the rotating cylinder 34 is distributed below the installation plate 36, one end of the rotating cylinder 34 penetrates through the installation plate 36 to connect the steering motor 33, the other end penetrates through the ship body mounting base 35 to connect the ship body mounting support 2, so as to connect the water power generation device 1, so that the steering motor 33 drives the rotating cylinder 34 to rotate, and can drive the water power generation device 1 to rotate synchronously, so as to adjust the steering of the water power generation device 1.

[0039] Further, the guide rod 32 is vertically arranged on the ship body mounting base 35 and extends out of the installation plate 36 on both sides of the rotating cylinder 34, the rotating cylinder 34 is slidably connected with the guide rod 32 through the sliding support rod 37, and the sliding support rod 37 is also connected with the hydraulic lifting device 31, so that the hydraulic lifting device 31 can drive the sliding support rod 37 to move vertically along the guide rod 32, so as to drive the steering motor 33, the rotating cylinder 34 and the installation plate 36 to move vertically along the guide rod 32 synchronously, thereby driving the water power generation device 1 to move synchronously through the rotating cylinder 34, so as to realize the lowering or recovery of the water power generation device 1.

[0040] In order to ensure the stable lifting of the water power generation device 1, the moving mechanism 3 further comprises a grid 38 arranged in the ship body 4 and matched with the lifting stroke of the water power generation device 1, so that when the water power generation device 1 is lifted to the highest position synchronously with the setting plate 36, the setting plate 36 can be flush with the grid 38, and the setting plate 36 and the grid 38 are locked by buckling, so as to lock the moving state of the setting plate 36 and the water power generation device 1, and prevent the water power generation device 1 from moving downward. Correspondingly, after the locking is released, the hydraulic lifting device 31 and the guide rod 32 can drive the setting plate 36 and the water power generation device 1 to move downward synchronously, and the water power generation device 1 is lowered.

[0041] In combination Figure 2 For example, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 away from the ship body mounting base 35, drives the steering motor 33, the rotating cylinder 34 and the setting plate 36 to move upward synchronously, and drives the water power generation device 1 to move upward synchronously. When the water power generation device 1 is lifted to the highest position and the ship body mounting support 2 abuts against the ship body mounting base 35, the setting plate 36 is lifted to the highest position synchronously and is flush with the grid 38, and the setting plate 36 and the grid 38 are locked by buckling, so as to lock the moving state of the water power generation device 1.

[0042] In combination Figure 3 Further, the locking is released to release the moving state of the water power generation device 1, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 towards the ship body mounting base 35, drives the steering motor 33, the rotating cylinder 34 and the setting plate 36 to move downward, and drives the water power generation device 1 to move downward synchronously, so that the water power generation device 1 is lowered to the water surface to generate electricity.

[0043] The moving mechanism 3 thus formed can lower and recover the water power generation device 1, adjust the steering of the water power generation device 1, and ensure the stability of the movement of the water power generation device 1.

[0044] In combination Figure 4 In the specific application process, when the ship body 4 is anchored, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 towards the ship body mounting base 35, and drives the water power generation device 1 to be lowered below the baseline 41 of the ship body 4, so that the water power generation device 1 can be completely placed on the water bottom, and the power generation efficiency is improved.

[0045] At the same time, the steering motor 33 drives the rotating cylinder 34 to rotate, drives the water power generation device 1 to rotate synchronously through the ship body mounting support 2, so as to adjust the steering of the water power generation device, capture the maximum water flow, and improve the water power utilization rate and the power generation efficiency.

[0046] Further, when the ship body 4 is sailing, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 away from the ship body mounting base 35, thereby driving the water power generator 1 to be lifted above the baseline 41 of the ship body 4, effectively reducing the resistance of the ship body 4 sailing, and ensuring that the ship body 4 can sail stably and quickly.

[0047] Here, the specific position and definition of the baseline 41 are not limited, and can be adjusted according to specific applications. As a preferred arrangement, the baseline 41 is defined as a vertical line passing through the midpoint of the distance between the head vertical line and the tail vertical line of the ship body 4, the vertical line intersects with the keel line of the ship bottom, and a horizontal line is drawn through the intersection point, which is the baseline 41 of the ship body 4.

[0048] In combination Figure 2 and Figure 5 In combination, the ship body mounting bracket 2 is arranged at the top end of the water power generator 1. Preferably, the ship body mounting bracket 2 is configured in a wedge-shaped structure, and the two sides are formed in a streamlined side to smoothly connect with the water power generator 1, so that the ship body mounting bracket 2 can smoothly cut and guide the water flow, so that the water flow can flow stably along the surface of the ship body mounting bracket 2, and the generation of water flow vortex is suppressed, thereby reducing the resistance of the ship body 4 sailing, and at the same time, the ship body mounting bracket 2 can also provide stable and uniform inflow conditions for the water power generator 1, thereby improving the capture efficiency of water power.

[0049] In combination Figure 2 , Figure 5 and Figure 6 Further, the ship body mounting bracket 2 is internally formed with a cavity capable of accommodating the generator power box 21, so that the generator power box 21 is built-in in the ship body mounting bracket 2 and cooperates with the water power generator 1, and is not affected by the water flow, thereby ensuring the stability and safety of the cable connection inside the generator power box 21.

[0050] In combination, the moving mechanism 3 further includes a power conversion device 39 connected to the ship power distribution board inside the ship body 4, and the rotating cylinder 34 is internally formed with a cable passing cavity communicating with the generator power box 21, and the top end is further provided with a conductive slip ring 391 connected to the power conversion device 39.

[0051] In this way, the generator power box 21, the rotating cylinder 34 and the conductive slip ring 391 cooperate to form a cable passage communicating the water power generator 1 and the power conversion device 39, so that the cable can be built-in in the generator power box 21 and the rotating cylinder 34, one end connected to the water power generator 1, and the other end connected to the conductive slip ring 391, so that the electricity generated by the water power generator 1 is transmitted to the power conversion device 39 through the cable, and then transmitted to the ship power distribution board through the power conversion device 39, thereby supplying power to the ship body 4, to improve the power generation efficiency.

[0052] In combination Figures 7 to 10, in order to improve the water power utilization rate and power generation efficiency of the water power generator 1, the water power generator 1 mainly comprises a flow guide cover 11 and a power generation assembly arranged inside the flow guide cover 11, and the flow guide cover 11 can guide the flow for the power generation assembly to improve the capture efficiency of the power generation assembly to the water power.

[0053] As shown in Figure 8 , specifically, a cavity cooperating with the power generation assembly is formed inside the flow guide cover 11, the flow guide cover 11 is configured in a horn structure, and the area of the inlet 111 is larger than that of the outlet 112, so that the flow guide cover 11 can smoothly guide the water flow from all directions and uniformly guide the water flow to the power generation assembly, reducing turbulence and vortex.

[0054] At the same time, the water flow enters the power generation assembly from the larger inlet 111 and flows out of the power generation assembly from the smaller outlet 112, which can effectively improve the flow rate of the water flow through the power generation assembly and impact the power generation assembly with high flow rate, thereby driving the power generation assembly to rotate efficiently and quickly, thereby improving the water power capture efficiency.

[0055] In addition, when the moving mechanism 3 drives the water power generator 1 to rotate through the rotating cylinder 34, the turning direction of the flow guide cover 11 can be adjusted synchronously, the inlet 111 of the flow guide cover 11 is directed to a larger water flow area, and the water power capture efficiency is further improved.

[0056] Combined with Figures 7 to 9 , further, the power generation assembly comprises a paddle 12, a rotor 13 and a stator 14, the stator 14 is configured in an annular structure and arranged inside the flow guide cover 11, close to the inner wall of the flow guide cover 11, and the inner wall of the flow guide cover 11 is provided with a mounting groove 113, the rotor 13 is configured in an annular structure and arranged inside the stator 14 and in the mounting groove 113, and the rotor 13 is slidably connected with the flow guide cover 11 through a bearing 15, and the paddle 12 is arranged inside the rotor 13, preferably, the paddle 12 and the rotor 13 are configured in an integrated structure, so that the paddle 12 can rotate synchronously with the rotor 13.

[0057] In this way, the water flow enters the inside of the flow guide cover 11 from the inlet 111 of the flow guide cover 11 and impacts the paddle 12 with high flow rate, driving the paddle 12 to rotate, and the paddle 12 drives the rotor 13 to rotate synchronously in the mounting groove 113, so that the rotor 13 and the stator 14 produce relative motion.

[0058] At the same time, the rotor 13 is provided with a permanent magnet, and the stator 14 is provided with an iron core and a winding coil, when the rotor 13 rotates relative to the stator 14, the rotating magnetic field generated by the permanent magnet in the rotor 13 will cut the winding coil of the stator 14, based on the law of electromagnetic induction, an induced electromotive force is generated in the winding coil, thereby generating an electric current and transmitting it to the cable in the generator electrical box 21, so as to realize the water power generation of the water power generator 1.

[0059] In order to make the paddle 12 drive the rotor 13 to rotate at high speed and improve the power generation efficiency, the paddle 12 is arranged at an offset angle inside the rotor 13, and the central vertical line of the paddle 12 is offset from the vertical line of the rotor 13, so that the surface of the paddle 12 can guide the water flow entering from the inlet 111 of the fairing shell 11 to change the direction of the water flow smoothly, so that the water flow flows along the surface of the paddle 12, reduces the energy loss caused by the direct impact of the water flow on the paddle 12, effectively decomposes the impact force of the water flow into the tangential force driving the paddle 12 to rotate, reduces the radial force component, effectively pushes the paddle 12 to rotate quickly, thereby improving the utilization rate of water power and prolonging the service life of the paddle 12.

[0060] As an example, the offset angle of the paddle 12 is 15°-25°, which can be adjusted according to specific applications.

[0061] In combination Figure 7 and Figure 8 Since the tip 122 of the paddle 12 has the largest radius of rotation when rotating, a larger centrifugal force and linear velocity are generated, and the water flow generates vortex and energy loss in the area of the tip 122, and the root 121 needs to bear the total sum of the centrifugal force of the paddle 12, which is the most stress-concentrated place of the paddle 12, therefore, the paddle 12 is arranged to be tapered from the inside of the rotor 13 to the center of the fairing shell 11, that is, the width of the paddle 12 gradually decreases from the root 121 to the tip 122.

[0062] In this way, the width of the root 121 of the paddle 12 is greater than the width of the tip 122, so that the root 121 can bear high tensile stress through a larger cross-sectional area to prevent fatigue fracture of the paddle 12, and the mass of the tip 122 can be reduced to effectively reduce the influence of the centrifugal force generated by the tip 122 on the root 212, and the surface area of the vortex generated by the water flow at the tip 122 is also reduced, thereby reducing the energy loss of the water flow, ensuring the stable high-speed rotation of the paddle 12, and improving the utilization rate of water power.

[0063] At the same time, the uniform and gradual reduction of the width of the paddle 12 can also make the water flow accelerate smoothly and avoid separation and vortex caused by sudden changes in the flow channel, thereby reducing additional hydraulic losses.

[0064] Compared with the vertical distribution of the traditional water power generator, the paddle 2' (as shown in Figure 1 ) with an elliptical cross-section, or the paddle with a narrow root and a wide tip, the paddle 12 of the device can effectively reduce energy loss, improve the rotation speed of the paddle 12 and the utilization rate of water power, thereby improving the power generation efficiency.

[0065] In addition, the traditional water power generator is provided with a rotating shaft 3' (as shown in Figure 1The hollow formed inside the water power generator 1 reduces the transmission components such as shafting, facilitates the flow of water, effectively improves the fluid performance, reduces the energy transmission loss, thereby improving the power generation efficiency, and reduces the vibration generated by the transmission components such as shafting, ensuring the operation stability of the water power generator 1 and the ship body 4.

[0066] Further, the device further comprises a control unit, which can control the working state of the hydraulic lifting device 31 and the steering motor 33 respectively, so as to adjust the lifting and steering of the water power generator.

[0067] Here, the control unit is a conventional technical means in the art, and as an example, the control unit can be composed of an existing PLC.

[0068] The following illustrates the working process of the application in specific application, and it should be noted that the content described herein is only a specific application example of the present application and does not limit the present application.

[0069] In combination Figures 2 to 4 When the ship body 4 is anchored, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 facing the ship body mounting base 35, drives the water power generator 1 to be lowered below the baseline 41 of the ship body 4, so that the water power generator 1 is completely placed on the water bottom.

[0070] Further, the steering motor 33 drives the rotation of the rotating cylinder 34, drives the water power generator 1 to rotate, and synchronously adjusts the steering of the fairing shell 11, so that the inlet 111 of the fairing shell 11 faces the larger water flow surface.

[0071] At the same time, the water flow enters the power generation assembly from the larger area inlet 111, and flows out of the power generation assembly from the smaller area outlet 112, so as to improve the flow rate of the water flow through the power generation assembly, and the water flow impacts the paddle 12 at a high flow rate, drives the paddle 12 to rotate, and drives the rotor 13 to synchronously rotate in the installation groove 113.

[0072] Therefore, the rotor 13 and the stator 14 produce relative motion, the rotating magnetic field generated by the permanent magnet in the rotor 13 cuts the winding coil of the stator 14, based on the law of electromagnetic induction, an induced electromotive force is generated in the winding coil, thereby generating an electric current and transmitting to the cable in the generator electrical box 21, so as to realize the water power generation of the water power generator 1.

[0073] Further, the cable transmits the electricity generated by the water power generator 1 to the power conversion device 39, and then transmits to the ship power distribution board through the power conversion device 39, so as to supply power to the ship body 4.

[0074] When the ship body 4 sails, the hydraulic lifting device 31 drives the sliding support rod 37 to move along the guide rod 32 away from the ship body mounting base 35, drives the water power generator 1 to be lifted above the baseline 41 of the ship body 4, effectively reduces the resistance of the ship body 4 sailing, and ensures that the ship body 4 can sail stably and quickly.

[0075] The marine water power generator provided by the application can lower the water power generator 1 to generate power by using water power when the ship body is anchored by the moving mechanism 3, can adjust the steering of the water power generator to capture the maximum water flow, thereby improving the water power utilization rate and the power generation efficiency, and can change the water flow environment by the water flow cover shell in the water power generator 1, thereby improving the water flow efficiency and the water power utilization rate.

[0076] The basic principle, main features and advantages of the application are shown and described above. It should be understood by those skilled in the art that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A marine hydrodynamic power generation device, in cooperation with a ship body, characterized by, The water power generation device, the ship body installation support and the moving mechanism, the water power generation device is connected with the moving mechanism through the ship body installation support, the water power generation device includes a guide cover and a power generation assembly arranged inside the guide cover, the moving mechanism can lower the water power generation device when the ship body is anchored, adjust the steering of the water power generation device, and can also recover the water power generation device when the ship body is sailing.

2. The marine hydrodynamic power generating device according to claim 1, characterized in that The moving mechanism includes a hydraulic lifting device, a guide rod, a steering motor, a rotating cylinder and a ship body installation base, the guide rod is arranged on the ship body installation base, one end of the rotating cylinder is connected with the steering motor, the other end penetrates through the ship body installation base and is connected with the ship body installation support, and the hydraulic lifting device can drive the rotating cylinder to move along the guide rod.

3. The marine hydrodynamic power generating device according to claim 2, characterized in that The moving mechanism further includes a power supply conversion device, the ship body installation support is provided with a generator power connection box matched with the water power generation device, the rotating cylinder is internally formed with a cable penetrating cavity connected with the generator power connection box, and a top end is further provided with a conductive slip ring connected with the power supply conversion device.

4. The marine hydrodynamic power generating device according to claim 1, characterized in that, The ship body installation support is configured in a wedge-shaped structure, and both sides are formed with streamlined side edges and are smoothly connected with the water power generation device.

5. The marine hydrodynamic power generating device according to claim 1, characterized in that, The guide cover is configured in a horn structure, and the inlet area is larger than the outlet area.

6. The marine hydrodynamic power generating device according to claim 1, characterized in that The power generation assembly includes a paddle, a rotor and a stator, the stator is configured in a ring structure and is arranged inside the guide cover, the rotor is configured in a ring structure and is distributed inside the stator, and the paddle is arranged inside the rotor and can drive the rotor to rotate synchronously.

7. A marine hydrodynamic power generation device according to claim 6, characterised in that, The guide cover is internally provided with a mounting groove, the rotor is arranged in the mounting groove and is slidably connected with the guide cover through a bearing.

8. The marine hydrodynamic power generating device according to claim 6, characterized in that The paddle is arranged at an angle inside the rotor.

9. The marine hydrodynamic power generating device according to claim 6, characterized in that, The paddle is configured in a tapered distribution with a width decreasing from the inside of the rotor to the center of the guide cover.

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